准备可扩展类型系统工作，更合理的JOIN查询优化算法，并行查询

.github/workflows/linux.yml

@@ -74,6 +74,7 @@ jobs:
           path: |
             ~/.stack
             chusql-core/engine/.stack-work
+            chusql-bootstrap/.stack-work
             chusql-server/.stack-work
             chusql-web/.stack-work
             chusql-cli/.stack-work
@@ -84,6 +85,10 @@ jobs:
         working-directory: chusql-cli
         run: stack build --fast
 
+      - name: bootstrap build
+        working-directory: chusql-bootstrap
+        run: stack build --fast
+
       - name: engine tests
         working-directory: chusql-core/engine
         run: stack test --fast